Just went out and took photos:
This is what I am calling Flore Pleno" Ok, I can't see stamens or a pistil, and the bloom center is not sticking up as high as on the Kwanso bloom.
And this is what I am calling Kwanso: I can see stamen but no pistil and the center of the bloom is sticking up high.
So I thought I now knew the difference between the two, but I decided to look at some of my other plants, I found some that now I would consider Kwanso, but the foliage was much more similar to Flore Pleno, found some that I thought would be Kwanso, but the center of the bloom was not tall.
Found some that I am pretty sure are Flore Pleno, just two stamens per bloom.
Now I am just as confused as ever.
